przemo199 / replayer

function UploadPage(): JSX.Element {

  const [file, setFile] = useState<File | null>(null);

  const [fileUrl, setFileUrl] = useState<string | null>(null);

  const [isUploading, setIsUploading] = useState<boolean>(false);

  const fileSelector = useRef<HTMLInputElement>(null);

  const getFile = () => {

    if (fileSelector.current) {

      fileSelector.current.click();

    }

  };

  const retrieveFile = () => {

    if (fileSelector.current?.files && fileSelector.current.files.length > 0) {

      setFile(fileSelector.current.files[0]);

    }

  };

  const sendFile = async () => {

    if (file) {

      const start = (new Date()).getTime();

      setIsUploading(true);

      const formData = new FormData();

      formData.append("file", file);

      formData.append("upload_preset", uploadPreset);

      const request = await fetch(cloudinaryEndpoint, {

        method: "POST",

        body: formData

      });

      if (request.ok) {

        const response = await request.json();

        if (response.asset_id) {

          const req = await fetch(apiPutEndpoint, {

            method: "POST",

            body: JSON.stringify({

              privateUrl: response.secure_url,

              name: file.name,

              type: file.type,

              size: file.size

            })

          });

          const res = await req.json();

          setFileUrl("/watch/" + res.resourceId);

          setFile(null);

          const end = (new Date()).getTime();

          console.log("Uploaded in " + (end - start) + "ms");

        }

      } else {

        alert(`Upload error\n${request.status} ${request.statusText}`);

      }

      setIsUploading(false);

    }

  };

  return (

    <React.Fragment>

      {fileUrl &&

        <div>

          <p>You can access your media here:</p>

          <Link to={fileUrl}>{" " + window.location.origin + fileUrl}</Link>

        </div>

      }

      <div className="selector-container" onClick={getFile}>

        <input type="file" className="file-selector" accept={acceptedFormats} ref={fileSelector}

          onChange={retrieveFile} />

        {!file && <h1>+</h1>}

        {file && <MediaShowcase file={file} />}

        {isUploading &&

          <div className="loading-screen">

            <h1>

              Uploading...

            </h1>

          </div>

        }

      </div>

      {file &&

        <Button className="btn-primary" onClick={sendFile}>

          Send file

        </Button>

      }

    </React.Fragment>